timmclark timmclark

10-10-2019
Chemistry

contestada

SiO2 + 4HF = SiF4 + 2H2O, what mass of HF is necessary to produce 12.91g of the SiF4?

Respuesta :

gbustamantegarcia054 gbustamantegarcia054

11-10-2019

Answer:

mass HF = 9.928 g

Explanation:

SiO2 + 4HF = SiF4 + 2H2O

∴ Mw SiO4 = 104.0791 g/mol

∴ Mw HF = 20.01 g/mol

⇒ mol HF = 12.91 gSiF4 * (mol SiF4 / 104.0791 g) * (4 mol HF / mol SIF4) = 0.496 mol

⇒ mass HF = 0.496 mol HF * ( 20.01 g HF / mol HF ) = 9.928 g HF

Answer Link

Otras preguntas

What is 3 1/3 divided by 1 7/8 in simplest form ?

it has not been a goal of the U.S. to _____. a. influence elections in African nations b. provide food to drought-stricken regions of Africa c. limit drug and a

incredible is to believable as disinterested is to ?

What is the function of the relative pronoun in the clause? However, the scientists whose discoveries enlighten the world are often unknown. A. direct object B.

jane deposited $22000 at the bank that pays 10% interest. bill deposited $16000 at a bank that pays 16% interest. who will receive more in a year,and by how muc

find y when x=9 if y varies directly as x, and y=245 when x=7

In Mexico, the expression Porfiriato refers to A. the revolution of 1911 that overthrew Diaz. B. any kind of authoritarian political oppression. C. the oppre

who is richard The lion-hearted

can u explain hiw do u find the equivalent fraction for 17/20

To make a dark orange color Ron mixes 3 ounces of red paint with 2 ounces of the yellow paint write the ratio of red paint to yellow paint